SPY4.DE vs. SMLK.DE

Last updated Jun 5, 2026

SPY4.DE (SPDR S&P 400 US Mid Cap UCITS ETF) and SMLK.DE (Invesco S&P SmallCap 600 UCITS ETF A) are both exchange-traded funds - SPY4.DE is a Mid Cap Blend Equities fund tracking the S&P MidCap 400, while SMLK.DE is a Small Cap Blend Equities fund tracking the S&P SmallCap 600. Both are passively managed. Over the past 5 years, SPY4.DE returned 8.81%/yr vs 6.92%/yr for SMLK.DE. Their correlation of 0.95 suggests significant overlap in exposure. SPY4.DE charges 0.30%/yr vs 0.14%/yr for SMLK.DE.

Performance

SPY4.DE vs. SMLK.DE - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in SPDR S&P 400 US Mid Cap UCITS ETF (SPY4.DE) and Invesco S&P SmallCap 600 UCITS ETF A (SMLK.DE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SPY4.DE achieves a 14.09% return, which is significantly lower than SMLK.DE's 15.73% return.

SPY4.DE

• 1D: 0.26%
• 1M: 2.42%
• YTD: 14.09%
• 6M: 13.87%
• 1Y: 23.49%
• 3Y*: 12.93%
• 5Y*: 8.81%
• 10Y*: 10.43%

SMLK.DE

• 1D: 0.95%
• 1M: 2.04%
• YTD: 15.73%
• 6M: 15.83%
• 1Y: 31.00%
• 3Y*: 12.46%
• 5Y*: 6.92%
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

SPY4.DE vs. SMLK.DE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
SPY4.DE SPDR S&P 400 US Mid Cap UCITS ETF	14.09%	-3.63%	18.67%	13.23%	-8.82%	12.05%
SMLK.DE Invesco S&P SmallCap 600 UCITS ETF A	15.73%	-4.02%	13.30%	13.97%	-11.83%	10.98%

Correlation

The correlation between SPY4.DE and SMLK.DE is 0.93, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (All Time) Calculated using the full available price history since Apr 15, 2021	0.95

The correlation between SPY4.DE and SMLK.DE has been stable across timeframes, ranging from 0.93 to 0.95 - a consistent structural relationship.

Return for Risk

SPY4.DE vs. SMLK.DE — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

SPY4.DE

SPY4.DE Risk / Return Rank: 55
SPY4.DE Sharpe Ratio Rank: 46
SPY4.DE Sortino Ratio Rank: 45
SPY4.DE Omega Ratio Rank: 44
SPY4.DE Calmar Ratio Rank: 76
SPY4.DE Martin Ratio Rank: 63

SMLK.DE

SMLK.DE Risk / Return Rank: 66
SMLK.DE Sharpe Ratio Rank: 56
SMLK.DE Sortino Ratio Rank: 56
SMLK.DE Omega Ratio Rank: 55
SMLK.DE Calmar Ratio Rank: 88
SMLK.DE Martin Ratio Rank: 76

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

SPY4.DE vs. SMLK.DE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR S&P 400 US Mid Cap UCITS ETF (SPY4.DE) and Invesco S&P SmallCap 600 UCITS ETF A (SMLK.DE). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	SPY4.DE	SMLK.DE	Difference
Sharpe ratio: Return per unit of total volatility	1.57	1.88	-0.31
Sortino ratio: Return per unit of downside risk	2.22	2.63	-0.41
Omega ratio: Gain probability vs. loss probability	1.28	1.33	-0.05
Calmar ratio: Return relative to maximum drawdown	3.78	5.02	-1.24
Martin ratio: Return relative to average drawdown	11.31	14.18	-2.88
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SPY4.DE vs. SMLK.DE - Sharpe Ratio Comparison

The current SPY4.DE Sharpe Ratio is 1.57, which is comparable to the SMLK.DE Sharpe Ratio of 1.88. The chart below compares the historical Sharpe Ratios of SPY4.DE and SMLK.DE, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	SPY4.DE	SMLK.DE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.57	1.88	-0.31
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.48	0.34	+0.13
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.53	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.65	0.34	+0.31

Drawdowns

SPY4.DE vs. SMLK.DE - Drawdown Comparison

The maximum SPY4.DE drawdown since its inception was -42.72%, which is greater than SMLK.DE's maximum drawdown of -32.69%. Use the drawdown chart below to compare losses from any high point for SPY4.DE and SMLK.DE.

Drawdown Indicators

	SPY4.DE	SMLK.DE	Difference
Max Drawdown Largest peak-to-trough decline	-42.72%	-32.69%	-10.03%
Max Drawdown (1Y) Largest decline over 1 year	-6.07%	-6.15%	+0.08%
Max Drawdown (3Y) Largest decline over 3 years	-29.11%	-32.69%	+3.58%
Max Drawdown (5Y) Largest decline over 5 years	-29.11%	-32.69%	+3.58%
Max Drawdown (10Y) Largest decline over 10 years	-42.72%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-5.87%	-8.96%	+3.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.03%	2.18%	-0.15%

Volatility

SPY4.DE vs. SMLK.DE - Volatility Comparison

The current volatility for SPDR S&P 400 US Mid Cap UCITS ETF (SPY4.DE) is 3.51%, while Invesco S&P SmallCap 600 UCITS ETF A (SMLK.DE) has a volatility of 4.06%. This indicates that SPY4.DE experiences smaller price fluctuations and is considered to be less risky than SMLK.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SPY4.DE	SMLK.DE	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.51%	4.06%	-0.55%
Volatility (6M) Calculated over the trailing 6-month period	9.83%	10.55%	-0.72%
Volatility (1Y) Calculated over the trailing 1-year period	14.65%	16.46%	-1.81%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.33%	20.01%	-1.68%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.50%	19.98%	-0.48%

SPY4.DE vs. SMLK.DE - Expense Ratio Comparison

SPY4.DE has a 0.30% expense ratio, which is higher than SMLK.DE's 0.14% expense ratio.

Dividends

SPY4.DE vs. SMLK.DE - Dividend Comparison

Neither SPY4.DE nor SMLK.DE has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both SPY4.DE and SMLK.DE in my portfolio?

With a correlation of 0.93, SPY4.DE and SMLK.DE move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which ETF is better, SPY4.DE or SMLK.DE?

On fees, SMLK.DE is cheaper at 0.14% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, SPY4.DE or SMLK.DE?

SMLK.DE is cheaper with a 0.14% expense ratio, compared with 0.30% for SPY4.DE.

What is the main difference between SPY4.DE and SMLK.DE?

SPY4.DE is categorized as Mid Cap Blend Equities, while SMLK.DE is Small Cap Blend Equities. SPY4.DE tracks S&P MidCap 400, while SMLK.DE tracks S&P SmallCap 600. They also come from different issuers: State Street and Invesco. Their fees differ too: 0.30% for SPY4.DE and 0.14% for SMLK.DE.